VLT/NACO adaptive optics imaging of GSS30 IRS1: a protostellar binary system?

Aims. We present high-resolution near-infrared images of the low- mass Class I young stellar object GSS 30 IRS1. Methods. The data were retrieved from the ESO archive and acquired in the HKsL'-bands with the adaptive optics system NACO at the ESO Very Large Telescope. Results. We discover two separate components in GSS 30 IRS1. The angular separation between the two components is similar to 0.15, corresponding to a projected linear separation of 24AU at a distance of 160 pc. The brightness contrasts between the two components are similar to 1.4mag at H band, 1.5 mag at K-s band, and 2.1 mag at L' band. The two components detected in GSS 30 IRS1 could represent two scattered light structures related to an outflow-disk complex or two young stellar objects embedded in a common disk. Here we discuss these two possibilities, as well as the CO ro-vibrational emission from GSS 30 IRS1.